Synthesis and properties of new non-fullerene acceptors based on A-D-A conjugated oligomers for organic solar cells

Papkovskaya, E.D.; Dyadishchev, I.V.; Balakirev, D.O.; Peregudova, S.M.; Surin, N.M.; Ponomarenko, S.A.; Luponosov, Y.N.

Авторы: Papkovskaya E.D., Dyadishchev I.V., Balakirev D.O., Peregudova S.M., Surin N.M., Ponomarenko S.A., Luponosov Yu N.
Сборник: BOOK OF ABSTRACTS HOPE-PV 2021
Тезисы
Год издания: 2021
Первая страница: 1
Последняя страница: 100
Номер статьи: 88
Аннотация: Organic photovoltaics is an intensively developing area. Organic solar cells (OSCs) have received a lot of attention due to the potential for the production of lightweight and inexpensive flexible solar cells [1]. Recently, thanks to advances in the development of photovoltaic materials and optimization of devices, the performance of the OSCs has rapidly increased up to 18% [2,3]. This progress is largely due to the use of a new generation of acceptor materials - non-fullerene acceptors (NFA). The most effective NFA are conjugated compounds of donor-acceptor structure with a central condensed electron-donor fragment and terminal strong electron-withdrawing groups [1,4]. Due to the possibility of a wide variation of donor and acceptor blocks in NFA, the complex of properties of such compounds (absorption spectrum, thermal, structural and chargetransporting properties, etc.) can be finely tuned for the required type of device and a specific donor material. Therefore, an urgent direction in the development of NFA is the synthesis of new representative of narrow bandgap molecules, investigation of their physicochemical and photovoltaic properties and finding out structure-properties correlation. In this work, the synthesis of new non-fullerene acceptors has been developed and carried out. Methods of organic and polymer synthesis were used to synthesize NPA. The chemical structure of the compounds was proved by 1H NMR and 13C NMR techniques. Their optical and electrochemical properties have been studied. The results of the study show that the obtained compounds have effective absorption in the red and near-IR spectral regions, and therefore have a high potential for use as an electron acceptor in OSCs. This work was carried out with the financial support of the Russian Science Foundation, project No. 21-43-00051.
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